Blisters When You Walk Higher Miles. Walking 10 miles (over 3 hours), even if you are used to walking for six miles, is more of a challenge. You can do it, but most people are likely to develop blisters in new places. Shoes and gear that worked fine for two hours may not be ideal for four hours.
How the Aurora Borealis occur. The Northern Lights are caused by the interaction of the solar wind - a stream of charged particles escaping the Sun - and our planet's magnetic field and atmosphere.
The Northern Lights or aurora borealis are a natural phenomenon that can paint the night sky with unearthly, surreal color. The Southern Lights or aurora australis also occur but are not as often observed. Northern Lights near Tromsoe, TromsÃ¸. Norway the aurorae are caused by charged particles ejected from the. sun